Fixme.ch - User contributions [en]

InsomniHack-2013

2013-04-04T04:33:30Z

Francoisb:

[[Category:CTF]]
[[Category:Conferences]]
== Information ==
* http://insomnihack.ch/
* '''Lieu:''' Palexpo Genève
* '''Dates:''' 21-22 mars 2013
** '''CTF:''' Vendredi 22 mars dès 18h
** '''Conferences:''' Vendredi 22 mars toute la journée
** '''Workshops:''' Jeudi 21 mars
*** ARM and Android exploitation par Stephen Ridley & Stephen Lawler
*** Le framework d'exploitation opensource: metasploit par Paul Rascagneres
*** Offensive HTML, HTML5, SVG and CSS or How to make sure your Pentest Report is never empty par Mario Heiderich
*** Méthodologies simples de management du risque : CORAS & OCTAVE ALLEGRO, par Jeremy Kenaghan
*** Exploitation de vulnérabilités Linux, par SCRT
* '''Nom de la team:''' FIXME
* 8 players per team: https://twitter.com/1ns0mn1h4ck/status/296543284959014912

== Fixme Team ==
* Team FIXME: Francois, Markdoe, Anael, Undert, Freestorm, Rorist, Max, LZSR
* Team EMXIF: Oliv, Stephane, Raph, albink, L33, François B, Thomas, Frederic

{| class="wikitable"
|+
! Nick !! Workshops !! Conferences !! Concours !! Souper
|-
| FreeStorm || Oui || Oui|| Oui || Oui
|-
| François || Oui || Oui || Oui || Oui
|-
| rorist || Oui || Oui || Oui || ?
|-
| Ol1v || Oui || Oui || Oui || ?
|-
| LZSR || Non || Oui || Oui || ?
|-
| raphsnts || Non || Non || Oui || ?
|-
| Anaël || Non || Non || Oui || ?
|-
| marked || Maybe || Non || Oui || ?
|-
| '''Total''' || ? || ? || ? || ?
|}

=== Transport vendredi 22 ===
{| class="wikitable"
|+
! Nick !! aller workshops (jeudi) !! aller conf !! aller insominhack !! retour après insomnihack || voiture
|-
| lszr || - || X (lszr) || - || X (lzsr, marked) || oui (4 places)
|-
| ol1v || X (Rorist) || X (Rorist) || - || X (Rorist) || oui (4 places fumeurs)
|}

== Result ==
* Ranking:
[[Image:final_result.png|200px]]
* Score evolution:
[[Image:score_evolution.png|200px]]

== Writeups ==
* [[InsomniHack-2013/Misc4/TheGame]]
* [[InsomniHack-2013/Web2/WanderShop]]

== Photos ==
<gallery>
Image:2013-03-22 20.51.29-1.jpg
Image:2013-03-22 20.52.00-1.jpg
</gallery>

== See Also ==
* [[InsomniHack-2012]]

InsomniHack-2013

2013-04-04T04:33:16Z

Francoisb:

InsomniHack-2013

2013-04-04T04:32:37Z

Francoisb: photos floutées

File:2013-03-22 20.52.00-1.jpg

2013-04-04T04:31:54Z

Francoisb: InsomniHack 2013

InsomniHack 2013

File:2013-03-22 20.51.29-1.jpg

2013-04-04T04:30:59Z

Francoisb: InsomniHack 2013

InsomniHack 2013

InsomniHack-2013

2013-04-02T14:38:16Z

Francoisb: supprimer photos

InsomniHack-2013

2013-03-29T03:11:34Z

Francoisb: 2 photos + write up for Misc 4 challenge

[[Category:CTF]]
[[Category:Conferences]]
== Information ==
* http://insomnihack.ch/
* '''Lieu:''' Palexpo Genève
* '''Dates:''' 21-22 mars 2013
** '''CTF:''' Vendredi 22 mars dès 18h
** '''Conferences:''' Vendredi 22 mars toute la journée
** '''Workshops:''' Jeudi 21 mars
*** ARM and Android exploitation par Stephen Ridley & Stephen Lawler
*** Le framework d'exploitation opensource: metasploit par Paul Rascagneres
*** Offensive HTML, HTML5, SVG and CSS or How to make sure your Pentest Report is never empty par Mario Heiderich
*** Méthodologies simples de management du risque : CORAS & OCTAVE ALLEGRO, par Jeremy Kenaghan
*** Exploitation de vulnérabilités Linux, par SCRT
* '''Nom de la team:''' FIXME
* 8 players per team: https://twitter.com/1ns0mn1h4ck/status/296543284959014912

== Fixme Team ==
* Team FIXME: Francois, Markdoe, Anael, Undert, Freestorm, Rorist, Max, LZSR
* Team EMXIF: Oliv, Stephane, Raph, albink, L33, François B, Thomas, Frederic

{| class="wikitable"
|+
! Nick !! Workshops !! Conferences !! Concours !! Souper
|-
| FreeStorm || Oui || Oui|| Oui || Oui
|-
| François || Oui || Oui || Oui || Oui
|-
| rorist || Oui || Oui || Oui || ?
|-
| Ol1v || Oui || Oui || Oui || ?
|-
| LZSR || Non || Oui || Oui || ?
|-
| raphsnts || Non || Non || Oui || ?
|-
| Anaël || Non || Non || Oui || ?
|-
| marked || Maybe || Non || Oui || ?
|-
| '''Total''' || ? || ? || ? || ?
|}

=== Transport vendredi 22 ===
{| class="wikitable"
|+
! Nick !! aller workshops (jeudi) !! aller conf !! aller insominhack !! retour après insomnihack || voiture
|-
| lszr || - || X (lszr) || - || X (lzsr, marked) || oui (4 places)
|-
| ol1v || X (Rorist) || X (Rorist) || - || X (Rorist) || oui (4 places fumeurs)
|}

== Result ==
* Ranking:
[[Image:final_result.png|200px]]
* Score evolution:
[[Image:score_evolution.png|200px]]

== Writeups ==
* [[InsomniHack-2013/Misc4/TheGame]]
* [[InsomniHack-2013/Web2/WanderShop]]

== Photos ==
[[Image:2013-03-22 20.52.00.jpg|200px]]
[[Image:2013-03-22 20.53.05.jpg|200px]]

== See Also ==
* [[InsomniHack-2012]]

InsomniHack-2013/Misc4/TheGame

2013-03-29T03:09:40Z

Francoisb: Created page with "== Summary == A popular game amongst survivors is the Rock-Paper-Scissors-Lizard-Spock game. To gain their respect, we strongly encourage you to be the best at this game. This wi..."

== Summary ==
A popular game amongst survivors is the Rock-Paper-Scissors-Lizard-Spock game. To gain their respect, we strongly encourage you to be the best at this game. This will strengthen your reputation and will attract new citizens.
Goal : Beat yout opponent 20 times in a row.

== Solution ==
Other than the pairs involving Rock-Paper-Scissors that you already know about, the other pairs are:

<pre>
Spock vaporizes Rock
Spock melts Scissors

Paper disapproves Spock
Lizard poinsons Spock

Lizard eats Paper
Lizard poinsons Spock

Rock crushes Lizard
Scissors decapitate Lizard
</pre>

Each of the 5 choices have 2 others beating it and 2 others losing. In case of draw, the computer wins (unfair!). Thus, there are no choices better than another. After analysis and attempts to find its strategy, the computer's choices seem random, not based on our previous choices. So there must be another signal to look at…

Looking at the packets transmitted with Wireshark, we see the computer answers turns with 2 packets. First packet with the results of the previous turn (or the welcome message before the first turn), second packet with "I've made my choice, what's yours ?". If you compute the elapsed time between those 2 packets, you discover the count of tenths of seconds tells what the computer will play.

Here's a possible solution in PHP:

<syntaxhighlight lang="php">
#!/usr/bin/php
<?php

$strategy = array(
// Tenths of sec => My choice // Computer's choice
1 => 'Paper', // Rock
2 => 'Scissors', // Paper
3 => 'Rock', // Scissors
4 => 'Scissors', // Lizard
5 => 'Paper', // Spock
);

$handle = fsockopen('challenges01.insomni.hack', 9999);
echo fread($handle, 1024);

$rounds = 0;

while (true) {
$start = microtime(true);
echo fread($handle, 1024);
$stop = microtime(true);
$think_time = 10 * round($stop - $start, 1);

sleep(1); // Think hard…
$my_choice = $strategy[$think_time];
echo $my_choice, "\n";
fwrite($handle, $my_choice);

echo fread($handle, 1024);

if (++$rounds == 20) break;
}

fclose($handle);

?>
</syntaxhighlight>

File:2013-03-22 20.52.00.jpg

2013-03-29T02:44:19Z

Francoisb: Insomni'Hack 2013

Insomni'Hack 2013

File:2013-03-22 20.53.05.jpg

2013-03-29T02:40:35Z

Francoisb: Insomni'Hack 2013

Insomni'Hack 2013

InsomniHack-2013

2013-03-17T01:55:20Z

Francoisb: